<!DOCTYPE HTML>
<html>
<head>
  <script type="application/javascript" src="mediaStreamPlayback.js"></script>
  <script type="application/javascript" src="/tests/dom/canvas/test/captureStream_common.js"></script>
</head>
<body>
<pre id="test">
<script type="application/javascript">
  "use strict";

  createHTML({
    title: "Testing that removeTrack+addTrack of video tracks still render the correct track in a media element",
    bug: "1223696",
    visible: true
  });

  runTest(() => Promise.resolve()
    .then(() => getUserMedia({audio:true, video: true})).then(stream => {
      info("Test addTrack()ing a video track to an audio-only gUM stream");

      var video = createMediaElement("video", "test_video_track");
      video.srcObject = stream;
      video.play();

      var h = new CaptureStreamTestHelper2D();
      var removedTrack = stream.getVideoTracks()[0];
      stream.removeTrack(removedTrack);
      video.onloadeddata = () => {
        info("loadeddata");
        var canvas = document.createElement("canvas");
        canvas.getContext("2d");
        var canvasStream = canvas.captureStream();
        setInterval(() => h.drawColor(canvas, h.grey), 1000);

        stream.addTrack(canvasStream.getVideoTracks()[0]);

        checkMediaStreamContains(stream, [stream.getAudioTracks()[0],
                                          canvasStream.getVideoTracks()[0]]);
      };

      return listenUntil(video, "loadeddata", () => true)
        .then(() => h.waitForPixelColor(video, h.grey, 5,
            "The canvas track should be rendered by the media element"))
        .then(() => {
          [removedTrack, ...stream.getAudioTracks()].forEach(t => t.stop());
        });
    }));
</script>
</pre>
</body>
</html>
